Equipment burn-in method and system

Abstract

An equipment burn-in method, which includes the equipment undergoing treatment in an oven, the oven undergoing cycles including at least one temperature-rise and/or temperature-fall transition, for which ventilation of the equipment is cut off during at least part of a temperature transition of the oven.

The invention claimed is: 
     
       1. A method for burn-in of an equipment item including ventilation, comprising steps of:
 performing a run-through of the equipment in an oven with cycles comprising at least one of a temperature-rise transition and a temperature-fall transition of the oven; 
 cutting off the ventilation for the equipment during at least a part of a temperature transition of the oven to limit heat exchange with the oven; and 
 restarting the ventilation for the equipment at an end of the temperature transition such that the equipment is traversed by air in the oven having a temperature that has been varied during the cutting off to increase a temperature change speed of the equipment. 
 
     
     
       2. The method for burn-in according to  claim 1 , further comprising restarting the ventilation at a flow exceeding a rated ventilation flow of the equipment so as to force ventilation of the equipment. 
     
     
       3. The method for burn-in according to  claim 1 , wherein the cycles include at least one hot level cycle. 
     
     
       4. The method for burn-in according to  claim 3 , wherein the hot level cycle is at a temperature on an order of 80° C. 
     
     
       5. The method for burn-in according to  claim 3 , wherein, starting from the hot level cycle, the ventilation is cut off prior to a beginning of a temperature fall and the cut off is extended until a maximum disparity between a temperature of the oven and a temperature of the equipment is achieved. 
     
     
       6. The method for burn-in according to  claim 1 , wherein the cycles include includes at least one cold level cycle. 
     
     
       7. The method for burn-in according to  claim 6 , wherein the cold level cycle is at a temperature on an order of −40° C. 
     
     
       8. The method for burn-in according to  claim 6 , wherein, starting from the cold level cycle, the ventilation is cut off prior to a renewed temperature rise and the cut off is extended until a maximum disparity between a temperature of the oven and a temperature of the equipment is achieved. 
     
     
       9. The method for burn-in according to  claim 6 , wherein an electrical supply for the equipment is cut off prior to and during a beginning of a renewed temperature rise to avoid temperature rise inside the equipment. 
     
     
       10. The method for burn-in according to  claim 1 , wherein ventilation of the equipment is driven by a regulator that includes temperature cycling procedures of the oven.